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For example, Mao et al. [8] observed significant correlations between WBGT and shoulder pain, lumbago and thirst of workers in steel milling plants, glass factories and ceramics factories.
Chen et al. [9] found that heart rate increased with increasing workload, even when WBGT decreased with increasing workload.
Wu et al. [10] found that the allowable exposure time was less than that stipulated in the work-rest time regimen standard for workers in thermal environments [11] in textile dyeing plants and iron foundries.
Srivastava et al. [12] and Ayyappan et al. [13] found that the WBGT in glass factories and automotive industries was higher than the value suggested by the American Conference of Governmental Industrial Hygienists [14] for the same working conditions.
Energy Vol. 74 (2003), p. 245-252 [7] E.L. and P.H.T.

El Agha, “Generation of sodium hypochlorite (NaOCl) from sodium chloride solution using C/PbO₂ and Pb/PbO₂ electrodes,” International Journal of Minerals, Metallurgy, and Materials, vol. 19, no. 6, pp. 561–566, 2012
Key et al., Development of a Small-Scale Electro-Chlorination System for Rural Water Supply.
Afify et al., “Electrochemical production of sodium hypochlorite from salty water using a flowing porous graphite electrode,” Energies, vol. 16, no. 12, p. 4754, 2023
Zayas et al., “Electrogeneration of hypochlorite ions using a dimensionally stable anode,” Journal of Electrochemical Science and Technology, 2024
Collana et al., “Electrosynthesis of sodium hypochlorite using ion-exchange membranes,” Chemical Engineering Transactions, vol. 117, 2025.

El Hakiki, O.
Milsom et al., RF Bulk Acoustic Wave Resonators and Filters, Journal of Electroceramics 12 (2004) 109-118
Iriarte et al., Electrical characterization of AlN MIS and MIM structures, Electron Devices, IEEE Transactions on 50 (2003) 1214-1219
Renaux et al., Dielectrical properties of metal-insulator-metal aluminum nitride structures: Measurement and modeling, Journal of Applied Physics 105 (2009) 044111
Hernando et al., The influence of sputter deposition parameters on piezoelectric and mechanical properties of AlN thin films, Materials Science and Engineering: B 172 (2010) 253-258

Box 32 El-Alia, Bab-Ezzouar, 16024 Algiers, Algeria a ikra@wissal.dz , b samiranemouchi@gmail.com Keywords: Pb free ceramics, CaTiO3-Based Ceramics, Sintering, Phase transitions.
Moreover, Zelezny et al [10] reported a ferroelectric behaviour of CaTiO3 at very low temperature (TC ~ 105K).
Perovskite-type oxyfluoride systems ABO3-BaLiF3 (A=Ba, Ca and B=Ti, Zr) were investigated by Yamamura et al. [12].
Several authors have detected two phase transitions whatever the method used, whereas Kennedy et al. have found three phase transitions [13].
According to Roushown and Masatomo [14], calcium titanate undergoes two reversible phase transitions: Orthorhombic Tetragonal Cubic Pbnm I4/mcm Pm3m There is no evidence of Cmcm phase observed by Kennedy et al. between the Pbnm and I4/mcm structures.

Pan et al. proposed that the transportation cost, the overtime wages and extra inventory holding costs for expedition were proportional to the item quantities rushed and hence the crashing cost could be represented as the sum of a fixed portion and a variable portion proportional to the quantities in the rushed order [3].
Lee et al. consider that backlogging rate is related to price discounts provide by supplier, and a controllable lead time model was developed [4].
Many scholars make numerous studies on reducing setup cost [5], for example, Kim et al. analyze the impact of different investment function of reducing setup cost on setup cost and total inventory cost [6]; Nye et al. investigated the investment policy of reducing setup cost of work-in-process inventory by queuing theory [7]; Freimer et al. developed an EPQ model with controllable setup cost and defects [8].
Lei: Applied Mathematics and Computation Vol. 189-1 (2007), pp.186-200 [5] E.L.

Ezugwu et al [4] have analyzed the effect of the machining parameters on flank wear during the machining of the nimonic C-263 alloy; they have reported that increasing the cutting speed and depth of cut results in accelerated flank wear.
Ezugwu et al [1] have reported that the machining of the nimonic C-263 alloy with PVD coated carbide offers greater advantage, due to its higher resistance to characteristic wear mechanisms.
The chemical composition of the work piece material is as follows (Wt%): 52.49 Ni, 0.19 Si, 0.46Mn, 20 Cr, 6.29 Mo, 0.07 Cu, 1.0 Fe, 16.7 Co, 1.94 Ti, 0.48 Al, 0.04 Nb, 0.15 W, 0.02 V, 0.02 C,0.001 S,0.007 Ta.
I.A Choudhury, M.A El-Baradie (1998) Machinability of Nickel-based Super alloys: a general review, International Journal of Materials processing, 278-284, 1998. 2.
K.Palanikumar, K.Shanmugam,J.Paulo Davim, Analysis and optimization of cutting parameters for surface roughness in machining AL/SiC particulate composites by PCD tool, international journal materials and product technology, Inder science enterprises Ltd, Vol 37, 117-128,2010.

References [1] Al-Amoudi OSB, Khan K, Al-Kahtani NS.
[3] Ismail A, Baghini MS, Karim MR, Shokri F, Al-Mansob RA, Firoozi AA, et al.
[6] Van Gemert D, Czarnecki L, Maultzsch M, Schorn H, Beeldens A, Łukowski P, et al.
[9] Shaker FA, El-Dieb AS, Reda MM.

Roth et al., Ordered Mesoporous Molecular Sieves Synthesized by a Liquid-crystal Template Mechanism, Nature 359 (1992) 710-712
Juang et al., Application of MCM-41 for dyes removal from wastewater.
El-Rassy, Adsorption kinetics and thermodynamics of azo-dye Orange II onto highly porous titania aerogel, Chem.
Damardji, et al., Preparation of TiO2-pillared montmorillonite as photocatalyst Part I.
Xue et al., Hybrid surfactant-templated mesoporous silica formed in ethanol and its application for heavy metal removal.

The conception of the point-based model simplification is proposed firstly by Alexa et al. [2] and Linsen et al. [3], and refined by the vertex-based simplification method.
In the paper [4] by Pauly et al. the resampling algorithm is proposed, but the simplification effect is dependent on the distribution of the point cloud partition.
The effect of the L2, 1 on describing the anisotropic features of the surface has been proved by Cohen et al [7]. 2.2 The error measure of the hierarchical space partition method During the AHSP, the geometrical error between the subdivision model and another one after every partition needs calculating, so the error can not only determine the simplification effect but affect the simplification rate due to the requirement of calculating the geometrical error repeatedly.
The steps of the adaptive hierarchical space partition as follow: 1) calculate all regions’ error Ei separately and place Ri into PQ; 2) take Ri responding the maximum error out of PQ ; 3) divide Ri into RL and RR; 4) calculate the resampling points RSL and RSL; 5) calculate the error EL and ER; 6) place RL,RR into PQ; 7) compare the number of Ri from PQ and the number of the simplification number, if the former is bigger than the latter, implement the process started from 2) iteratively, else accomplish the simplification.
[2] Alexa M, Behr J, Cohen-Or D, et al.

Noorani et.al [18] has investigated turbulent flow on straight to curved since turbulent flow is dominant in such condition.
The effect of turbulent Prandtl number has been investigated on 2010 by Ould-Rouiss et.al which shows that this parameter has caused near-wall flow spread to the mean section [19].
According to relation between molecular viscosity and turbulent viscosity proposed by Yakhot and Orszag et.al [20] that valid for 2.5 x 104 < Re < 106, and according to Yakhot et.al [6] that use dimension of space d = 3 [20] for unspecified large Re application of ratio between molecular viscosity and turbulent viscosity with smaller range and specified Re is needed.
Yakhot et.al [20] described that heat condutctivity has not been satisfactory decrbed in low Prandtl number.
El-Askary, “On the performance of linear and non-linear k-e turbulence models in various jet applications,” European Journal of Mechanics B/Fluids, vol. 30, pp. 325-340, 2011